Developmental dysplasia of the hip
Diagnosis certain
Updates to Case Attributes
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Congenital hip dislocation is more common in girls, the first born baby, more on the left hip and may be bilateral in 20% of cases.
Developmental dysplasia of the hip can be easily diagnosed by plain X-ray with the help of the following lines: Hilgenreiner line is drawn between each triradiate cartilage. Then, lines are drawn perpendicular to Hilgenreiner line through the superolateral edge of the acetabulum (Perkin(Perkin line), dividing hip into 4 quadrants the ossific nucleus of femoral head should be in the lower inner quadrant. Acetabular angle lies between Hilgenreiner line and a line drawn from triradiate cartilage to lateral edge of the acetabulum. This angle diminishes with age and should measure less than 20° by 2 years of age.
-<p><a href="/articles/congenital-hip-dislocation">Congenital hip dislocation </a>is more common in girls, the first born baby, more on the left hip and may be bilateral in 20% of cases.</p><p><a href="/articles/developmental-dysplasia-of-the-hip">Developmental dysplasia of the hip</a> can be easily diagnosed by plain X-ray with the help of the following lines: <strong>Hilgenreiner line</strong> is drawn between each triradiate cartilage. Then, lines are drawn perpendicular to Hilgenreiner line through the superolateral edge of the acetabulum (Perkin line), dividing hip into 4 quadrants the ossific nucleus of femoral head should be in the lower inner quadrant. Acetabular angle lies between Hilgenreiner line and a line drawn from triradiate cartilage to lateral edge of the acetabulum. This angle diminishes with age and should measure less than 20° by 2 years of age.</p>- +<p><a title="congenital hip dislocation" href="/articles/congenital-hip-dislocation">Congenital hip dislocation </a>is more common in girls, the first born baby, more on the left hip and may be bilateral in 20% of cases.</p><p><a href="/articles/developmental-dysplasia-of-the-hip">Developmental dysplasia of the hip</a> can be easily diagnosed by plain X-ray with the help of the following lines: <a title="Hilgenreiner line" href="/articles/hilgenreiner-line">Hilgenreiner line</a> is drawn between each triradiate cartilage. Then, lines are drawn perpendicular to Hilgenreiner line through the superolateral edge of the acetabulum (<a title="Perkin line" href="/articles/perkin-line">Perkin line</a>), dividing hip into 4 quadrants the ossific nucleus of femoral head should be in the lower inner quadrant. <a title="Acetabular angle" href="/articles/acetabular-angle">Acetabular angle</a> lies between Hilgenreiner line and a line drawn from triradiate cartilage to lateral edge of the acetabulum. This angle diminishes with age and should measure less than 20° by 2 years of age.</p>
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